Fig. 4

In panel A, fragment signal (relative read counts) is plotted against fragment length and in panel B against fragment GC-content. Each dot corresponds to a fragment cluster, and data from the four single-genome samples are displayed together. In panel C is shown the effect of the simple length normalization on a single sample. Raw read counts are normalized as described in the text. The red-brown color highlights the fragments within the length interval 30–500 bases. Note the log-transformed y-axes in all panels